Let There Be Light

Let There Be Light follows the story of dedicated scientists working to build a small sun on Earth, which would unleash perpetual, cheap, clean energy for mankind. After decades of failed attempts, a massive push is now underway to crack the holy grail of energy.


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  • ★★★★½ review by muriq on Letterboxd

    This is an absolute must watch for anyone interested in future technology and energy.

    It's a film which shows people who devote their lives to grand bold projects for idealistic reasons. It also examines the obstacles such projects face.

    The film explains what fusion is and what it could become if people manage to harness it. It does so through the words of scientists working on it. And one can see how hard it's for them to explain. Therein the problem lies. Fusion should be publicly understood and supported. But for some it seems to reside in the realm of science fiction and that's the best case scenario. For many it's not something they concern themselves at all.

    Let there be light talk about something very complicated and presents it as a very human thing. There is the best of humanity and reason in this film. Still much of it is shrouded in human pettiness and bureaucratic nightmares.

  • ★★★½ review by Punn on Letterboxd

    some great information. and some cool visuals as well. loved that it finally explained to me what fusion/fission is. I guess I dinged it pretty big for leaving me hanging without resolution. but that's not really the filmmaker's fault. still felt a bit jipped.

  • ★★★★ review by Simon Columb on Letterboxd

    “If we don’t crack fusion, then we are doomed”, says ITER physicist Mark Henderson, in Mila Aung-Thwin and Van Royko’s Let There Be Light. Unlike renewable sources, nuclear fusion is not considered a fashionable energy source, despite its lack of radioactive waste and the enormous quantity of energy it could provide. The title of this documentary invokes a biblical scale of invention. But if you are recreating a sun with the potential to save the future of mankind, the God-like terminology may actually be applicable.

    In the South of France, roughly 50 miles north of Marseille, sits an enormous nuclear experiment. 37 countries are funding ITER and, if it manages to create energy from fusion, then our crisis with fossil fuels is at an end. Billions has been funnelled into this Tokamak invention, one of many possible methods to create nuclear fusion. There are alternatives, of course. Michel Laberge, founder of General Fusion, has another theory he is testing while, the smallest in scale, Eric Lerner of Focus Fusion, experiments within a small, old shop. The latter two don’t get the same substantial funding as ITER, but they are all searching for the “holy grail” of energy. Henderson compares their life’s goal as akin to Gaudi and the Sagrada Família, as the completion of such a magnificent achievement may not be in their lifetime. Let There Be Light informs, explores and naturally compares the different approaches. Considering fusion is not our current default choice of power, we wait with baited breath to see how close we are – or if it will ever happen at all.

    To ensure that the dense subject matter is accessible and engaging, directors Aung-Thwin and Royko employ smart, smooth animations to inform us of the variety of historical explorations into nuclear fusion. From the Russian tokamak to the American stellarator, and the interesting scientists, such as Ronald Richter and Andrei Sakharov (who were all funded greatly in their spurious and legitimate fusion tests in the 1950’s and 1970’s respectively), Let There Be Light ensures we know the complex details behind this mysterious source of power. Inevitably, funding becomes a grave issue as their research requires millions of dollars of investment, and below a certain level, it is unlikely they can even operate the machinery for fusion to ever occur. Can humans put their money and esteemed scientists into a foray that may impact the next generation more than the current one?

    Let There Be Light globe hops between Russia, Argentina, France, Germany, America and further afield as we are dealing with one of the rare examples of cooperation, though politics does sometimes muddy the water. It is clear that, for decades of investment without a tangible and physical outcome except theoretical findings, politicians increasingly find it difficult to continue funding such a dream. Nevertheless, we see who does and who struggles, while a speech by Angela Merkel proves that some countries are aiming for the stars more so than others (Are the UK even investing in it?).

    This is mistake-making on an enormous scale. In the early days, one man says “we had things blow up every day”, and of course, failed experiments are all part of scientific discovery. This infectious optimism in Let There Be Light lifts you to the same level of hope the scientists share and, by the final credits, when we see the current projections, you cannot help but be excited. It is a scientific gamble that is rooted in research, experiments and data. Surely, all this effort can’t be for nothing, can it? Those who have funded the endeavour (tax-payers money – so that’s you!), must wait to find out.


  • ★★★★ review by Sean Kelly on Letterboxd

    This is a documentary for people who like science and how it's being applied to literally create a star.

    Blog Review: www.skonmovies.com/2017/04/hot-docs-2017-let-there-be-light.html

  • ★★★★ review by Screen-Space on Letterboxd

    "The Canadian-based filmmaker has crafted an elegant, insightful and entertaining work of understated urgency..."

    Read the full review here: screen-space.squarespace.com/reviews/2017/4/1/let-there-be-light.html

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